1 /* 2 * Copyright 2020 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef CALL_ADAPTATION_ADAPTATION_CONSTRAINT_H_ 12 #define CALL_ADAPTATION_ADAPTATION_CONSTRAINT_H_ 13 14 #include <string> 15 16 #include "api/adaptation/resource.h" 17 #include "api/scoped_refptr.h" 18 #include "call/adaptation/video_source_restrictions.h" 19 #include "call/adaptation/video_stream_input_state.h" 20 21 namespace webrtc { 22 23 // Adaptation constraints have the ability to prevent applying a proposed 24 // adaptation (expressed as restrictions before/after adaptation). 25 class AdaptationConstraint { 26 public: 27 virtual ~AdaptationConstraint(); 28 29 virtual std::string Name() const = 0; 30 31 // TODO(https://crbug.com/webrtc/11172): When we have multi-stream adaptation 32 // support, this interface needs to indicate which stream the adaptation 33 // applies to. 34 virtual bool IsAdaptationUpAllowed( 35 const VideoStreamInputState& input_state, 36 const VideoSourceRestrictions& restrictions_before, 37 const VideoSourceRestrictions& restrictions_after, 38 rtc::scoped_refptr<Resource> reason_resource) const = 0; 39 }; 40 41 } // namespace webrtc 42 43 #endif // CALL_ADAPTATION_ADAPTATION_CONSTRAINT_H_ 44